As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT, LOSS OF HYDRAULIC FLUID. QUANTITY DROPPED DOWN TO AUX MARK. PERFORMED IMMEDIATE ACTION ITEMS THEN ABNORMAL HYDRAULIC PROCEDURES. REPLACED NR 10 ELBOW FITTING ON NR 3 ENGINE HYDRAULIC BY-PASS PUMP. SYSTEM CHECKED ON ENGINE RUN. CHECKED IAW 29-10-12.